Extraction of U（Ⅵ） and Th（Ⅳ） in nitric acid medium with  N,N,N′,N′-tetrahexylsuccinylamide

Wang Youshao    Sun Guoxin    Bao Borong

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Extraction of U（Ⅵ） and Th（Ⅳ） in nitric acid medium with N,N,N′,N′-tetrahexylsuccinylamide

更新时间：2021-04-09

- Extraction of U（Ⅵ） and Th（Ⅳ） in nitric acid medium with N,N,N′,N′-tetrahexylsuccinylamide
- NUCLEAR TECHNIQUES Issue 10, (1997)
- 作者机构：
  
  中国科学院上海原子核研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： TL241.14
- Published：01 October 1997
- 稿件说明：
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[1]王友绍,孙国新,包伯荣.N,N,N',N'-四己基丁二酰胺在硝酸介质中萃取铀和钍[J].核技术,1997(10):12-15.

Wang Youshao Sun Guoxin Bao Borong. Extraction of U（Ⅵ） and Th（Ⅳ） in nitric acid medium with N,N,N′,N′-tetrahexylsuccinylamide[J]. Nuclear techniques, 1997, (10).
[1]王友绍,孙国新,包伯荣.N,N,N',N'-四己基丁二酰胺在硝酸介质中萃取铀和钍[J].核技术,1997(10):12-15. DOI：

Wang Youshao Sun Guoxin Bao Borong. Extraction of U（Ⅵ） and Th（Ⅳ） in nitric acid medium with N,N,N′,N′-tetrahexylsuccinylamide[J]. Nuclear techniques, 1997, (10). DOI：

摘要

研究了Ｎ，Ｎ，Ｎ′，Ｎ′－四己基丁二酰胺（ＴＨＳＡ）从硝酸介质中萃取铀、钍的机理，考察了ＨＮＯ３浓度、ＴＨＳＡ浓度、温度对铀和钍分配系数的影响。还对铀、钍的反萃进行了研究，得出了萃合物的组成为ＵＯ２（ＮＯ３）２·ＴＨＳＡ和Ｔｈ（ＮＯ３）４·２ＴＨＳＡ，并计算出萃取ＵＯ２＋２和Ｔｈ４＋的表观平衡常数分别为３．１０和０．０５９８；萃取反应的热焓分别为－１５．１９ｋＪ／ｍｏｌ和－１７．３０ｋＪ／ｍｏｌ。

Abstract

The extraction mechanisms of U（Ⅵ） and Th（Ⅳ） in nitric acid solutions with N

N′

N′--tetrahexylsuccinylamide（THSA） were described The effects of nitric acid concentration

THSA concentration and temperature on the distribution coefficients of U（Ⅵ） and Th（Ⅳ）

and the back extraction behaviours of U（Ⅵ） and Th（Ⅳ） from organic phase were studied The compositions of the complex are found to be UO2（NO

）·THSA and Th（NO

）4·2THSA The equilibrium constants and thermody- namical functions of the extraction reactions have been calculated

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